CAPTCHA - Wikipedia

How to add a CAPTCHA to your website Whichever CAPTCHA you decide to use, code snippets are usually provided by the CAPTCHA provider. The CAPTCHA service provider can often be configured to only display CAPTCHA codes that you approve of, and your Stop Spam! How to use the Captcha and ReCaptcha module in How to use the Drupal Captcha module. The Drupal 8 Captcha module is an easy to use module largely used in forms to identify if the user is a human or a bot. The Drupal Captcha module is also compatible with Drupal 9. Let’s get started with installing and using the Captcha module in Drupal 8. hCaptcha - Stop more bots. Start protecting privacy.

Feb 19, 2019

Any implementation of a CAPTCHA should allow blind users to get around the barrier, for example, by permitting users to opt for an audio or sound CAPTCHA. Image Security. CAPTCHA images of text should be distorted randomly before being presented to the user. Many implementations of CAPTCHAs use undistorted text, or text with only minor distortions. reCAPTCHA | Google Developers

The standard word captcha with an audio option. This is the standard captcha available whenever a …

Dec 24, 2014 Should I Use a CAPTCHA? | The Pros & Cons of Web Form … Nov 05, 2013